Back To Top
Fisher™ Yarway™ AT-18/28 Heavy Duty A.T.-Temp Desuperheater
Fisher Yarway AT-18/28 Heavy Duty A.T.-Temp Desuperheater
The Fisher Yarway AT-18/28 Heavy Duty A.
T.-Temp Desuperheater was specifically developed for use on medium/high pressure steam applications. The fabricated construction makes it easily adaptable to meet various boiler codes and material specifications. The unit can also be used as a liquid into gas injector for which high grade alloy such as stainless steel is often used.
Fisher™ Yarway™ AT-18/28 Heavy Duty A.T.-Temp Desuperheater


Critical Service
Steam Condition
Flow Characteristics
Special Characterization, Modified Equal Percentage, Linear, Equal percentage
Operating Temperature
High Temperature
Pressure Class
Shutoff Class
Class V (FCI 70-2)
Valve Size
NPS 1 / DN 25, NPS 1-1/2 / DN 40, NPS 2 / DN 50, NPS 4 / DN 100, NPS 3 / DN 80
Valve Size Standard
Valve Type
Angle Valve
Other Configurations
Contact your local Emerson office to learn about additional specifications or options for this product.


  • Forged construction
  • High quality stuffing box, containing no asbestos
  • Variable nozzle type
  • Wide range of Cv (Kv) capacities available
  • Special nozzle combinations available
  • Semi balanced internals for economic actuator selection
  • Pneumatic actuator available
  • Pressure class and connections: ASME B16.34 class 900 to 2500 EN 1092 PN 160 - 400
  • Materials: ASTM SA 182 F22 or 1.7383, ASTM SA 182 F347H or 1.4550, ASTM SA 182 F91 or 1.4903, Other materials upon request